CMake/Help/command/get_filename_component.rst

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get_filename_component
----------------------
Get a specific component of a full filename.
::
get_filename_component(<VAR> <FileName> <COMP> [CACHE])
Set ``<VAR>`` to a component of ``<FileName>``, where ``<COMP>`` is one of:
::
DIRECTORY = Directory without file name
NAME = File name without directory
EXT = File name longest extension (.b.c from d/a.b.c)
NAME_WE = File name without directory or longest extension
ABSOLUTE = Full path to file
REALPATH = Full path to existing file with symlinks resolved
PATH = Legacy alias for DIRECTORY (use for CMake <= 2.8.11)
Paths are returned with forward slashes and have no trailing slahes.
The longest file extension is always considered. If the optional
``CACHE`` argument is specified, the result variable is added to the
cache.
::
get_filename_component(<VAR> FileName
PROGRAM [PROGRAM_ARGS <ARG_VAR>]
[CACHE])
The program in ``FileName`` will be found in the system search path or
left as a full path. If ``PROGRAM_ARGS`` is present with ``PROGRAM``, then
any command-line arguments present in the ``FileName`` string are split
from the program name and stored in ``<ARG_VAR>``. This is used to
separate a program name from its arguments in a command line string.